Adams Megan A, Gray Darrell M, Ketwaroo Gyanprakash A
Division of Gastroenterology, University of Michigan Health System, Ann Arbor, Michigan.
Division of Gastroenterology, Washington University in St. Louis, St. Louis, Missouri.
Gastroenterology. 2014 Jan;146(1):5-9. doi: 10.1053/j.gastro.2013.11.030. Epub 2013 Nov 20.